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<style>
.ly1{width:100%; height:100px; background:blue;}
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.ly2{width:auto; height:auto;background:green;}
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	.ly2-2-2{width:32%; height:90px; background:black;float:left;margin:5px}
	.ly2-2-3{width:32%; height:90px; background:pink;float:left;margin:5px}
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.ly3{width:100%; height:100px;background:blue;}
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